```html
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>IP111 - 专业网络诊断工具</title>
    <link href="https://cdn.staticfile.org/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
    <link href="https://cdn.staticfile.org/tailwindcss/2.2.19/tailwind.min.css" rel="stylesheet">
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            color: #333;
            background-color: #f9fafb;
        }
        .hero-gradient {
            background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #9333ea 100%);
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        .card-hover {
            transition: all 0.3s ease;
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        .card-hover:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
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</head>
<body>
    <header class="hero-gradient text-white">
        <div class="container mx-auto px-6 py-24 md:py-32">
            <div class="max-w-4xl mx-auto text-center">
                <h1 class="text-4xl md:text-5xl font-bold mb-6 font-serif">精准网络诊断，尽在IP111</h1>
                <p class="text-xl md:text-2xl mb-10 opacity-90">一站式专业网络工具平台，为开发者和网络管理员提供全面解决方案</p>
                <a href="https://ip111.cn/" class="inline-block bg-white text-indigo-600 hover:bg-gray-100 font-medium rounded-lg px-8 py-3 text-lg transition duration-300 transform hover:scale-105">
                    立即体验 <i class="fas fa-arrow-right ml-2"></i>
                </a>
            </div>
        </div>
    </header>

    <section class="container mx-auto px-6 py-16">
        <div class="max-w-4xl mx-auto text-center mb-16">
            <h2 class="text-3xl md:text-4xl font-bold mb-4 font-serif">网络诊断的瑞士军刀</h2>
            <p class="text-gray-600 text-lg">IP111.cn 提供从基础查询到专业分析的全方位网络工具，满足您的各种需求</p>
        </div>

        <div class="grid md:grid-cols-2 lg:grid-cols-3 gap-8 mb-20">
            <div class="bg-white rounded-xl shadow-md overflow-hidden card-hover">
                <div class="p-6">
                    <div class="feature-icon rounded-full flex items-center justify-center mb-4">
                        <i class="fas fa-map-marker-alt text-indigo-600 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">IP地址查询</h3>
                    <p class="text-gray-600">精准显示公网IP、物理位置、运营商信息，支持IPv4和IPv6双栈检测</p>
                </div>
            </div>

            <div class="bg-white rounded-xl shadow-md overflow-hidden card-hover">
                <div class="p-6">
                    <div class="feature-icon rounded-full flex items-center justify-center mb-4">
                        <i class="fas fa-code text-indigo-600 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">HTTP请求头分析</h3>
                    <p class="text-gray-600">详细展示浏览器指纹、UA信息及服务器交互参数，帮助开发者调试</p>
                </div>
            </div>

            <div class="bg-white rounded-xl shadow-md overflow-hidden card-hover">
                <div class="p-6">
                    <div class="feature-icon rounded-full flex items-center justify-center mb-4">
                        <i class="fas fa-network-wired text-indigo-600 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">网络连通性检测</h3>
                    <p class="text-gray-600">提供Ping、端口扫描等功能，快速诊断网络连接问题</p>
                </div>
            </div>

            <div class="bg-white rounded-xl shadow-md overflow-hidden card-hover">
                <div class="p-6">
                    <div class="feature-icon rounded-full flex items-center justify-center mb-4">
                        <i class="fas fa-globe text-indigo-600 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">DNS解析工具</h3>
                    <p class="text-gray-600">查询域名的各类记录及传播状态，辅助域名管理和问题排查</p>
                </div>
            </div>

            <div class="bg-white rounded-xl shadow-md overflow-hidden card-hover">
                <div class="p-6">
                    <div class="feature-icon rounded-full flex items-center justify-center mb-4">
                        <i class="fas fa-tools text-indigo-600 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">实用网络工具集</h3>
                    <p class="text-gray-600">包含WebSocket测试、网速测试等专业工具，满足多样化需求</p>
                </div>
            </div>

            <div class="bg-white rounded-xl shadow-md overflow-hidden card-hover">
                <div class="p-6">
                    <div class="feature-icon rounded-full flex items-center justify-center mb-4">
                        <i class="fas fa-language text-indigo-600 text-xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">双语界面支持</h3>
                    <p class="text-gray-600">中英文双语界面，方便国际用户使用</p>
                </div>
            </div>
        </div>
    </section>

    <section class="bg-indigo-50 py-16">
        <div class="container mx-auto px-6">
            <div class="max-w-5xl mx-auto">
                <h2 class="text-3xl font-bold mb-12 text-center font-serif">典型使用场景</h2>
                
                <div class="mermaid-container mb-8">
                    <div class="mermaid">
                        mindmap
                          root((IP111.cn))
                            使用场景
                              :VPN连接验证
                              :网站开发调试
                              :跨境业务监测
                              :网络故障排查
                              :域名管理维护
                              :网络安全分析
                    </div>
                </div>

                <div class="grid md:grid-cols-2 gap-8">
                    <div>
                        <h3 class="text-xl font-bold mb-4 flex items-center">
                            <i class="fas fa-shield-alt text-indigo-600 mr-3"></i> VPN连接验证
                        </h3>
                        <p class="text-gray-700 mb-6">当您使用VPN时，IP111可快速验证您的IP地址是否已成功切换到目标地区，确保您的隐私保护和地理访问权限设置正确。</p>
                    </div>
                    <div>
                        <h3 class="text-xl font-bold mb-4 flex items-center">
                            <i class="fas fa-laptop-code text-indigo-600 mr-3"></i> 网站开发调试
                        </h3>
                        <p class="text-gray-700 mb-6">在开发过程中，HTTP头信息分析工具能帮助开发者识别浏览器兼容性问题，优化用户体验，确保网站在不同环境下正常运行。</p>
                    </div>
                    <div>
                        <h3 class="text-xl font-bold mb-4 flex items-center">
                            <i class="fas fa-plane-departure text-indigo-600 mr-3"></i> 跨境业务监测
                        </h3>
                        <p class="text-gray-700 mb-6">对于有全球业务的用户，了解自己在不同国家地区的网络访问情况至关重要，IP111可以模拟不同地区的访问环境。</p>
                    </div>
                    <div>
                        <h3 class="text-xl font-bold mb-4 flex items-center">
                            <i class="fas fa-bug text-indigo-600 mr-3"></i> 网络故障排查
                        </h3>
                        <p class="text-gray-700 mb-6">当您遇到网站无法访问的情况，IP111提供的Ping、端口扫描等工具能帮助您快速定位问题所在，是IT人员的得力助手。</p>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <section class="container mx-auto px-6 py-16">
        <div class="max-w-4xl mx-auto">
            <h2 class="text-3xl font-bold mb-12 text-center font-serif">核心优势</h2>
            
            <div class="grid md:grid-cols-3 gap-8 mb-16">
                <div class="text-center">
                    <div class="text-indigo-600 text-4xl mb-4">
                        <i class="fas fa-bolt"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">极速响应</h3>
                    <p class="text-gray-600">简洁界面无广告干扰，加载速度快，即时呈现结果</p>
                </div>
                <div class="text-center">
                    <div class="text-indigo-600 text-4xl mb-4">
                        <i class="fas fa-layer-group"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">专业全面</h3>
                    <p class="text-gray-600">覆盖从基础网络参数到专业诊断数据的全方位工具</p>
                </div>
                <div class="text-center">
                    <div class="text-indigo-600 text-4xl mb-4">
                        <i class="fas fa-mobile-alt"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-2">多端适配</h3>
                    <p class="text-gray-600">响应式设计，完美适配电脑和移动设备</p>
                </div>
            </div>

            <div class="bg-white rounded-xl shadow-md overflow-hidden p-8 mb-16">
                <h3 class="text-xl font-bold mb-4 flex items-center">
                    <i class="fas fa-tag text-indigo-600 mr-3"></i> 使用成本
                </h3>
                <p class="text-gray-700 mb-4">IP111.cn 完全免费，无需注册即可使用全部功能，也没有高级付费版本。所有工具集成在一个平台，无需在多个网站间切换，极大提高工作效率。</p>
                <p class="text-gray-700">请注意：某些高级网络测试功能可能受到用户网络环境的限制，建议在稳定的网络环境下使用。</p>
            </div>
        </div>
    </section>

    <section class="bg-gray-50 py-16">
        <div class="container mx-auto px-6">
            <div class="max-w-3xl mx-auto">
                <h2 class="text-3xl font-bold mb-12 text-center font-serif">快速上手指南</h2>
                
                <div class="space-y-8">
                    <div class="flex items-start">
                        <div class="step-number rounded-full flex-shrink-0 flex items-center justify-center mr-4 mt-1">1</div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">访问网站</h3>
                            <p class="text-gray-700">在浏览器中输入 <a href="https://ip111.cn/" class="text-indigo-600 hover:underline">ip111.cn</a> 即可访问网站</p>
                        </div>
                    </div>
                    
                    <div class="flex items-start">
                        <div class="step-number rounded-full flex-shrink-0 flex items-center justify-center mr-4 mt-1">2</div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">查看基本信息</h3>
                            <p class="text-gray-700">首页会自动显示您的基本IP信息，包括IP地址、地理位置和运营商</p>
                        </div>
                    </div>
                    
                    <div class="flex items-start">
                        <div class="step-number rounded-full flex-shrink-0 flex items-center justify-center mr-4 mt-1">3</div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">选择工具</h3>
                            <p class="text-gray-700">通过顶部导航栏选择您需要的具体工具，如HTTP头分析、DNS查询等</p>
                        </div>
                    </div>
                    
                    <div class="flex items-start">
                        <div class="step-number rounded-full flex-shrink-0 flex items-center justify-center mr-4 mt-1">4</div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">输入参数</h3>
                            <p class="text-gray-700">根据界面提示输入相关参数，如需要检测的域名、IP地址等</p>
                        </div>
                    </div>
                    
                    <div class="flex items-start">
                        <div class="step-number rounded-full flex-shrink-0 flex items-center justify-center mr-4 mt-1">5</div>
                        <div>
                            <h3 class="text-xl font-bold mb-2">获取结果</h3>
                            <p class="text-gray-700">系统会立即显示分析结果，您可以根据数据诊断问题或获取所需信息</p>
                        </div>
                    </div>
                </div>

                <div class="text-center mt-12">
                    <a href="https://ip111.cn/" class="inline-block bg-indigo-600 hover:bg-indigo-700 text-white font-medium rounded-lg px-8 py-3 text-lg transition duration-300 transform hover:scale-105">
                        开始使用 <i class="fas fa-external-link-alt ml-2"></i>
                    </a>
                </div>
            </div>
        </div>
    </section>

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</body>
</html>
```